INVESTIGATION OF THE OPTIMIZATION OF SLIT WIDTH FOR A SLITTED BLUFF-BODY BURNER - PULVERIZED COAL IGNITION AND FLAME STABILIZATION

After studying the factors of how the slit width of a slitted bluff-bo dy (SBB) burner influences the cold state flow field, the hot state te mperature and gas concentration fields, the following important conclu sions are obtained: the slit width influences not only how characteris tics behind the slitted bluff-body such as the size and reflux rate of the recirculation region, but also the quantity of pulverized coal je tting into it. To use it in an industrial plant, the optimal value of slit width is determined as about 10 percents of the width of the bluf f-body (BE).